Harrington is located close to the center of Delaware. Harrington is between the Kent, Sussex, Caroline county. Harrington has 2.75 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Harrington population is 3,643, which has grown 14.78% since 2000. The population growth rate is lower than the state average rate of 17.03% and is higher than the national average rate of 11.61%. Harrington median household income is $39,213 in 2010-2014 and has grown by 26.72% since 2000. The income growth rate is about the same as the state average rate of 27.12% and is about the same as the national average rate of 27.36%. Harrington median house value is $143,300 in 2010-2014 and has grown by 71.00% since 2000. The house value growth rate is lower than the state average rate of 78.60% and is much higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Harrington is better than the state average in quality. The Harrington area code is 302.